I have had my Boxster for about 1 year and for.

LOWPIE

1999 PORSCHE BOXSTER

22,000 MILES

I have had my boxster for about 1 year and for the first time I noticed a "fin" pop up at the rear of the car just below the trunk. First, what is this for (keeping the engine cooler?)? And it is stuck in the up position. How does it retreat back into position?